Roof framing tool



p 1, 1931- E. LUGINBUHL 1, 03

ROOF FRAMING TOOL Filed Jan. 21. 1929 2 Sheets-Shem 1 DIFFERENCE INLENGTH OF common RAFTERS JACKS 16"cimER m mcnss 10 PIER roor mm m INCHESINVENTOR. ELIAS LUGINBUHL.

w ATTORNEY.

Sept. 1, 1931. E. LUGINBUHL ROOF FRAMING TOOL Filed Jan. 2;. 1929 2Sheets-Sheet 2 COMMON RkFTERS PER FOOT RUN m DIFFERENCIE mL sne m 0FJACKS 1s c sm' ER 1N INCHES INVENTOR. ELIAS LUGINBUHL.

X 'ITORNEY III Patented Sept. l, 1931 UNHTED STATES ELIAS LUGINIBUHL, OFNOIIEGWOOID, OHIO ROOF FRAMING TOOL Application filed January 21, 1929.SeriaLNo. 333,874.

The invention relates to an improved roofframing tool for the purpose ofmeasuring, computing the lengths and marking the proper angles oncommon, hip, valley and jack rafters.

The object of the invention is to provide the tool with automatic meansfor setting the wing markers relative to the rise of the roof desired,to be used in marking the proper cut to be made on jack rafters. Afurther object of the invention is to provide the tool with anadjustable angle member, for marking the end angle on rafters andcontrolling the wing members. A further object is to provide the toolwith miter angles when the angle member is on the zero mark, or at rightangles to the vertical edge of the body-members, which position will setthe automatic wing markers at forty-five degrees with relation to theplane of the face of the body-member. With these and other objects inview the invention will be further readily understood from the followingdescription and claims, and from the drawings, in which latter Fig. 1 isa side elevation of my improved device.

Fig. 2 is a plan view of the same. 7

Fig. 3 is an end elevation of the same.

Fig. 4 is a side elevation on a reduced scale showlng the opposite sideof that shown in Fig. 1.

Fig. 5 is a detail section taken inthe plane of the irregular line 5-5of Fig. 1, partly broken away.

Fig. 6 is a side elevation of my device, shown in adjusted position,and;

Fig. 7 is a plan View of the same, partly broken away. 7

In the building of roofs, rafters requiring different angles arenecessary, particularly in roofs of more than two faces. The raftersused are generally termed common, valley, hip and jack rafters. The jackrafters require a vertical angle and a horizontal angle at the point ofcontact with the hip or valley rafter. It is for this purpose that theinvention is particularly useful.

My device comprises a body-member 11, forming asquare with a base 12, aleg 13, and an arcuate extension 14. Angle bars 15, 16 comprise bases 17and vertical flanges 18. The flanges 18 are positioned back to back wltha space 19 between them, and the bases 17 extending outwardly. I haveshown a plate 20 secured to the lower faces of the bases 17 by means ofrivets 21, although any other means may be employed such as spot weldingif desired.

The arcuate extension 14 is received in the space 19 between therespective angle bars. Ends 22 of the flanges 18 of the angle barsstraddle the upper end 23 of the leg 13 and are pivotally connectedthereto by means of a screw 24 received through holes in one of theflanges and the upper end of the leg 13 and threaded into the otherflange.

Thearcuate extension 14 is provided with an arcuate slot 26, a bolt 27is received throughholes in the flanges 18 and the slot 26, a wing nut28 is threaded over the thread- 1. ed end 29 of the bolt 27 to clamp theangle bars to the arcuate extension. Releasing the wing nut the anglebars can be adjusted to any desired angle within the limits of thearcuate slot.

Horizontal wings 30, 31 are pivoted about a stud 32 received in a hole33 in the leg 13, and in holes 34 in lugs 35, 36 extending from theangle wings 30, 3h The holes 34 in the lugs are slightly larger than thestud to per- L mit rocking motion about the stud. The stud 'is providedwith turned over heads 37 to maintain the parts in operable relation.

The bases 17 of the angle bars 15, 16 are cut away as instanced at 38adjacent to the wings to prevent interference with the marking edge 39of the wings, when the wings are moved inwardly.

Studs 41 secured in holes 42 in the wings 30, 31 extend through angularslots 43 in the bases 17 heads 44: on said studs prevent disengagementof the parts.

The face of the arcuate extension 14 is provided with graduations 45,indicating the angle corresponding to the rise in inches of the desiredroof. A scale 46 indicates the length of the common rafters per foot runin inches. A scale 17 indicates the difference in length of jack raftersset at sixteen inch centers. On the reverse side of the extension ascale 48 indicates the length of valley or hip rafters per foot run ininches.

For an example, aroof with a seven inch rise is to be built, the wingnut 28 is released and the angle bars are moved until the face 49coincides with the line on the scale l5 opposite 7, (see Fig. 6) thereading on the scale 46 at this point will give the exact length of thecommon rafters per foot run. is then placed adjacent to the face 19 andthe edge 50 of the leg 13 is used to mark the angle on which the cut isto be made.

The reading opposite 7 on the scale as on the reverse side of thebody-member, gives the length of the hip and valley rafters, per footrun together with the proper angle at which to cut the rafter. Jackrafters for a 7 inch rise roof are computed on the face of thebody-member by reference to the scale 47, which gives the diiierence inlength of each succeeding rafter.

The acl; rafters meeting the other rafters at an angle require ahorizontal and a vertical angle at their point of contact. The verticalangle is marked similar to the common rafters. The horizontal angle ismarked by means of the marking edge on the wings 80, 31. It will benoted that the point of articulation for the angle bars and the wingsare separated, thereby causing the wings to move toward the angle barsas the angle bars are moved downwardly from their zero position, thewings moving toward the angle bars are drawn inwardly due to the studs41 moving in the slots 43. nus with the base of the angle barsregistering with the seven inch rise'iine, the angle wings will havebeen moved inwardly the proper distance, whereby the edge can be used tomark the angle at which to cut the horizontal angle of the jack rafters.(See Fig. 7.)

WVhen the angle bars are moved to the zero position as shown in Fig. 1,the edges 39 of the wings are at exactly forty-live degrees withrelation to the face of the body-member and can be used to mark mitercuts.

From the foregoing description it will be readily seen that l havedevised a simple and practical tool requiring but a single setting toframe a roof with a minimum amount of calculation.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is:

1. In a device of the character described,

The rafter comprising a body-member, angle members pivoted to saidbody-member, wing members pivoted to said body-member and having slideconnection with said angle members, whereby movement of said anglemember will cause movement of said wing members therewith and in atransverse plane thereto.

2. In a device of the character described, comprising a body-memberprovided with indicia thereon, angle members pivoted to saidbody-member, wing members pivoted to said body-member, said pivot spacedfrom the pivot of said angle members and means for moving said wingmembers in a transverse plane to the movement of said angle members, andcontrolled by said angle members.

3. In a device of the character described, comprising a base, a legextending at right angles tosaid base, angle members )ivoted to saidleg, an arcuate extension extending from said base concentric with thepivot of said angle members, said angle members strad- *dling said legand said arcuate extension,

wings pivoted to said leg and provided with marking edges, meansconnecting said wings with said angle members whereby movement of saidangle members will cause movement of said wings in a transverse plane.

a. In a device of the character described, comprisinga base, a legextending at right angles to said base, angle members pivoted to saidleg, an arcuate extension extending from said base and provided with aslot concentric with the pivot of said angle members, and means forclamping said angle members to said arcuate extension, wings pivoted tosaid leg and provided with marking edges, means connecting said wingswith said angle members whereby movement of said angle members willcause movement of said wings in a transverse plane, and said arcuateextension provided with indicia adjacent said slot.

5. In a device of the character described, comprising a base providedwith an extending leg and an arcuate extension, an angle member pivotedto said leg, said arcuate extension being concentric with said pivot, aplate secured to the base of said angle member, a wing member in theplane of said plate pivoted to said leg, said pivot being spaced fromthe pivot of said angle member, sliding connection between said anglemember and said wing member whereby movement of said angle member willcause movement of said wing member with and in a transverse plane to themovement of said angle member.

6. In a device of the character described, comprising a base, a legextending from said base, an arcuate extension extending from said baseand provided with a slot therein,- an angle member pivoted to said legon a common axis with said arcuate extension, means for clamping saidangle member to said body portion, a wing member pivoted to said leg ata point removed from said com- ELIAS LUGINBUHL.

